Step-by-step guide for upgrading WebLogic 10.3.6 (11g) to 12.1.3 (12c):

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Pre-Upgrade Steps:


Backup Critical Data:


Backup:


Domain configurations (DOMAIN_HOME)


Applications (WAR/EAR/JAR files)


JDBC/JMS configurations

Security files (DefaultAuthenticatorInit.ldift, fileRealm.properties)

Keystores (DemoIdentity.jks, DemoTrust.jks)

Check System Requirements

Verify OS, JDK, and database compatibility with WebLogic 12.1.3:


JDK: Oracle JDK 1.7+ (12.1.3 requires JDK 7/8)

Disk Space: 2GB+ for installation

RAM: 4GB+ (recommended)

Install WebLogic 12.1.3

Download installer from Oracle.

Run installation (silent/GUI mode):

java -jar fmw_12.1.3.0.0_wls.jar -silent -responseFile /path/response_file.rsp

Set new ORACLE_HOME (e.g., /opt/oracle/wls1213)

Upgrade Process:

Domain Upgrade (Recommended)

Run Upgrade Assistant

Navigate to ORACLE_HOME/oracle_common/upgrade/bin and execute:
./ua.sh
Select "WebLogic Domain" → Choose 10.3.6 domain directory.

Review Upgrade Tasks

The tool detects config changes and prompts for:
JDBC/JMS migration
Security store conversion (if using custom realms)
JTA transaction logs (TLOG) migration

Execute Upgrade

Start the upgrade process (logs saved in DOMAIN_HOME/upgrade_logs)

Verify Upgraded Domain:

Check config.xml in new DOMAIN_HOME:
grep "12.1.3" $DOMAIN_HOME/config/config.xml

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